A balloon has a volume of 10 L at a pressure of 1.5 atm. If the volume is increased to 28.9 L, what will the new pressure be? Assume temperature is held constant. Record your answer to the nearest hundredth with no unit. EX 100.23 plsss helppp

the awnser is group 12

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally